import { ContentSectionPart, ContentSectionPartConfig } from './section';
import { TemplateResult } from '@blinkk/selective-edit';
import TimeAgo from 'javascript-time-ago';
export declare class HistoryPart extends ContentSectionPart {
    timeAgo: TimeAgo;
    constructor(config: ContentSectionPartConfig);
    get canChangeSection(): boolean;
    get label(): string;
    get section(): string;
    templateAction(): TemplateResult;
    templateChanges(): TemplateResult;
    templateContent(): TemplateResult;
    trimSummary(summary?: string): string;
}